extend ticket33316 changes file to include more changes

changes/ticket33316

@@ -3,3 +3,13 @@
       corresponding to their dependencies, so that every system is
       initialized before the ones that (theoretically) depend on it.
       Fixes bug 33316; bugfix on 0.4.0.1-alpha.
+
+  o Minor features (tests):
+    - Initialize all subsystems at the beginning of our unit test harness,
+      to avoid crashes due to uninitialized subsystems.
+      Follow-up from ticket 33316.
+
+  o Code simplification and refactoring:
+    - Merge the orconn and ocirc events into the "core" subsystem, which
+      manages or connections and origin circuits.  Previously they
+      were isolated in subsystems of their own.